Just two years after the Biturbo had been launched, Maserati introduced a four-door variant which maintained the same styling, but was built onbased on a longer platform with a 2,600mm wheelbase. With the Quattroporte competing in a higher segment, the 425 marked a new entry for the Trident in a competitive market for fast luxury sedans of contained dimensions. The engine was the new 2.5L evolution of the V6 just introduced on the Biturbo for export markets. Twin-turbo technology allowed the 425 a top speed in excess of 215km/h, whilst at the same time keeping the price reasonable. The very refined interior featured ergonomic seats with velour designed by Missoni, or leather trim to order. The air conditioning was standard equipment, hereas a very elegant set of leather bags and suitcases was offered as optional.